Permutation-lock.



-To all whom it may concern:

SIGMUND SPRUNG, OF NEW YORK, N. Y.

PERMUTATION-LOCK.

Specification of Letters Patent.

Patented July 14, 1908.

Application filed-March 11 1908. Serial No. 420,421.

Be it known that I, SIGMUND SPRUNG, a citizen of the United States, and a resident of the city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Permutation-Locks, of which the following is a specification.

The present invention relates to permutation locks, and more particularly to adlocks, and has for its object to provide a lock of this character which can only be opened by a person who knows the combinationand who has the proper key in possession.

Generally speaking, the invention consists of a device, having rotatable tumblers, controlling a plurality of oscillating tumblers, which in turn control the movement of a locking plate, engaging the shackle or the lock bolt, as the case may be.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation of a padlock,

embodying the present invention, Fig. 2 is a face view of the same, one of the outer faces of the case being removed, Fig. 3 is .a view similar to the one shown in Fig. 2 with the other of the faces of the case removed, Fig. 4

is a sectional view taken on line 4;4 of Fig..

3. Fig. 5 is a detail of Fig. 3, the arts being shown in different positions, and igs. 6 and 7 are details of construction.

The casing 1 of the lock may be of any suitable shape and of a construction of the usual manner; in this particular case a cylindrical casing is shown and divided by means of a partition 2 into two compartments 3 and 4. A swinging shackle 5 is pivotally connected to the casing, and provided with a notched end 6, which engages a locking plate 7 slidably mounted within the compartment 4 of the casing. The movement of this slidable locking plate is controlled by a plurality of tumblers, the relative position and construction of which will be hereinafter more fully described.

As mentioned in the statement of the invention, the lock relates to that particular class of locks, which are opened by means of a key after a plurality of rotatable tumblers have been set to their proper position. In this particular case three rotatable tumblers are provided and indicated by the numeral 8. These tumblers are rotatably mounted upon a sleeve 9, which is composed of a plurality of disks 10 and 11, of which the disks indicated by the numeral 11 are of a smaller diameter than the disks 10. .The disks 10 and 11 are secured together and to the front plate 13 of the lock case by means of rivets 9. Since the holes of the tumblers 8 are of a smaller diameter than the outer diameter of the disks 10 and .of a diameter corresponding to the diameter of the disks 11, it will be seen that these disks 10 and 11 will hold the tumblers 8 in place and at the proper distance from each other.

A cylindrical body 12 is mounted upon the front plate 13 and the partition 2 0f the casing. This cylindrical body is provided with a slot for the passage of a flat key, by means of which the cylindrical body 12 may be rotated. The rotatable tumblers are operated bymeans of this cylindrical body 12. For this purpose the cylindrical body 12 carries an arm 14 extending near to the outer periphery of the tumblers and engaging the same by means which will be now described. There are three tumblers mounted on a sleeve 9, as hereinbefore described; the middle one of which carries near its periphery a pin 15, fixedly secured to the same, and engaging the slots 16 of the two outer rotatable tumblers 8. It is obvious that by means of the middle tumbler and the pin 15, carried thereby, the outer tumblers of the lock may be set to a predetermined point, and it is obvious that the relative movement of the tumblers depends on the length of the slots 16. On

' the other hand, the combination of the lock depends wholly on the relative position of the pin 15 and length of these slots. The arm 14 of the cylindrical body 12 engages the pin 15 of the middle tumbler, which in turn, engages the two slots 16 of the outer tumblers, and when, therefore, the cylindrical body 12 is turned, it will rotate the tumblers and set the same to a desired position. Each of the tumblers is provided with a recess 17, which recesses may be brought to a position where they register and allow a spring controlled arm to pass into the same.

The plate 13 of the lock case is provided with a dial 18, while the key 19 of the lock is rovided with a pointer 20, by means of whlch the combination of the lock may be set, there being a relation between the dial, the pointer of the key and the rotatable tumblers.

The compartment 4 of the casing incloses the locking mechanism. This locking mechanism comprises an oscillating tumbler 21, pivoted at 22 and carrying at right angles thereto an arm 23 which is held in contact with the rotatable tumblers 8 by means of a spring 24. It will be seen that when the recesses of the rotatable tumblers are brought into a position where they register, and if the construction of the lock is such that they register at a position where this arm is located, the same will pass into ,the registering recesses of the tumblers, whenever the latter have been set to the proper combination. The oscillating tumbler 21 controls the movement of a second oscillating tumbler 25, which contacts at its upper part 26 with the arm 23 and is pivoted to the slid able locking plate 7. Obviously when the arm 23 passes into the registering recesses 17 of the tumblers 8 it will push the tumbler 25 downward into the path of the key 19. Normally the spring 27 holds the tumbler 25 in its upper position, whereby it does not project into the path of the key, which latter may, therefore, be turned without engaging this tumbler.

The slidable lock-plate 7 is provided with a projection 28, which engages the recess 6 of the shackle 5. This lock-plate slides between guides 29, 29 and is held by means of a spring 30 in engagement with the shackle. The movement of the sliding plate is efiected by means of the tumbler 25, which is pivoted to the lock-plate and is provided with a recess 31, which may be engaged by the key. It will be seen that when the key engages this recess it pushes the tumbler 25 toward the spring 30 and, since the tumbler 25 is pivoted to the locking plate, the locking plate will also be displaced, whereby the projection 28 will bev disengaged with the recess 6 of the shackle 5 and the lock may beopened.

It is obvious that means must be provided, which will arrest the upward motion of the tumbler 25, so that the same is forced to move toward the spring 30. For this purpose the tumbler 25 is provided with an arm 32, having a cross section tapering toward the shackle of the lock and a projection 33. A sliding bar 34 is mounted between guides 35 and 36, and is held by means of a spring 37 in engagement with the shackle 5. This bar carries a spring 37 having a pin 38 mounted thereon and projecting through an opening in the bar 34 so as to engage the projection 33 of the tumbler 25. When, therefore, this tumbler moves downward, the pin 38 of the s ring 37 will be allowed to project through tie bar and into the path of the tumbler 25, when-the same is moved upward,

The 0 eration of the device is as follows: The turn lers 8 are set by means of the key to their proper position, whereby the bar 23 will be allowed to pass into the recesses in said tumblers and push thus the tumbler 25 into the path of the key. The key will engage the recess 31 of the tumbler, and since the pin 38 of the bar 34 allows this tumbler to be lifted until said tumbler engages the pin, the further movement of the key will push the tumbler and the locking plate 7, to which the same is pivoted, toward the spring 30, where-- by the spring 37 will be allowed to act and force the shackle 5 of the lock outward, which is thus opened. The spring 30 brings the locking plate 7 and the tumbler 25 back to its normal position. The tumblers 8 are set to the desired combination and are controlled according to this combination by the key 19, having a pointer 20, indicating on the dial 18, attached to the lock case. The key is turned in a given direction, say for instance, three times, whereby the pin 15 will engage one of the outer tumblers; setting now the key so that its pointer points to a given numeral of the dial, the recess 17 of this tumbler will. be brought into a position wl'lere the arm 23 could )ass into the same, would it not be for the ot ier two disks, the recesses of which do not yet register with the recesses of the tumbler already set. In order to set the remaining two tumblers, the key is now turned in a direction opposite to the direction in which it has been turned in order to set the first. tumbler, whereby the pin 15 engages the other outer tumbler, and, when the pointer of the key is set to a given numeral, the recess of this tumbler will coincide with the recess of the tumbler already set. When now the key is turned again in a direction opposite to the direction in which the last tumbler was moving, and set to a given numeral, all the recesses will coincide or register and allow the spring-controlled arm 23 to pass into the same. When it is desired to close the lock, it is necessary, first, to bring the shackle into its recess and force the same downward, whereby the locking plate 7 will engage the same, and, second, to disturb the combination of the rotating tumblers. It will be understood that the locking plate 7 may look a bolt instead of a shackle.

What I claim is:

1. In a lock, the combination with a plurality of rotatable tumblers, of a plurality of oscillating tumblers controlled by said rotatable tumblers, and a locking )late operated by one of said oscillating tum lers.

2. In a lock, the combination with a looking plate, of an oscillating tumbler secured thereto, a. second oscillating tumbler opcratively connected to said first tumbler, and a plurality of rotatable tumblers controlling said second tumbler.

3. In a combination padlock, the combioperate the same, a second tumbler opera-- tively connected to said first tumbler, and a plurality of rotatable tumblers controlling said second tumbler.

Signed at New York, in the county of New York and State of New York, this 12th day of December, A. D. 1907.

SIGMUND SPRUNG.

Witnesses:

SIGMUND HERZOG, S. BIRNBAUM. 

